Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fe8effdcc684b7…

MALICIOUS

PDF

36.7 KB Created: 2020-08-09 01:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03a730cbf1b64b4174e5fe4ae4c264ca SHA-1: 4ec58503e953401905c1c3a30e05eaf8e691dde5 SHA-256: 86fe8effdcc684b72511be64ed2e253215b66666e67cbfc8f96b87db11a7af7d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector URL associated with malicious activity. The primary redirector URL is 'https://ttraff.ru/pify?keyword=subtraction+regrouping+pdf', which appears to be part of an SEO link farm designed to lure users with deceptive content. The document body, though heavily obfuscated, also contains this redirector URL, suggesting the document's purpose is to drive traffic to malicious sites under the guise of providing a PDF document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=subtraction+regrouping+pdf In PDF document text
    • http://files.nucec.net/uploads/1/3/0/7/130775102/d707264.pdfIn PDF document text
    • http://files.sunshinefamilyhealthcare.com/uploads/1/3/1/8/131857115/7285241.pdfIn PDF document text
    • http://files.dizzycoach.com/uploads/1/3/0/8/130874129/redesoba-xurun.pdfIn PDF document text
    • http://files.dojobianco.com/uploads/1/3/1/3/131380052/giwuje.pdfIn PDF document text
    • http://files.clinicalalliancenetwork.com/uploads/1/3/1/4/131437822/xapodesapeboru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5836/files/42978798521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2648/0295/files/64921892490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/wiiu_usb_helper_title_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/89381210851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/57560381873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/netine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6394/8950/files/jujavaweraxomekifogesena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/5360582242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/ctet_eligibility_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/fapezajitexazolupef.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A3 5356 bytes
SHA-256: 5502767cf181f4c8191f010f8ae4b14910efa097dd3f328734e80976f0b8846d
font_01_sfnt_off000062e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E7 10376 bytes
SHA-256: 7dc1b751ad7561a2c790be765e16ef36da714a1fbc825f11893cfd3c18ea9635

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